Commit Graph

8936 Commits

Author SHA1 Message Date
Roland McGrath 78b984ae2c Fix unwind.h configure check for bare environment. 2014-07-03 21:46:59 -07:00
Roland McGrath 2d5976a580 Add missing #include in sysdeps/alpha/fpu/s_nearbyint.c 2014-07-03 21:15:56 -07:00
Roland McGrath c1f5acd4f4 Robustify Linux kernel headers configure checks 2014-07-03 20:35:42 -07:00
Roland McGrath 4d614fe5e0 S390: Quash unused variable warning due to no-op THREAD_SET_POINTER_GUARD. 2014-07-03 19:17:00 -07:00
Siddhesh Poyarekar 38851324d8 Restore subdir conditional for tst-timer dependency. 2014-07-03 18:52:51 -07:00
Richard Henderson 69862e2511 alpha: Remove nearbyint and nearbyintf implementations
The original implementation was written for EV5, which does not
record inexact in the status register for /SU (but no /I) insns.
But EV6 does record the inexact status; the lack of /I simply
means that the exception is suppressed.

Adding feholdexcept becomes the bulk of the overhead, so we might
as well use the default implementation.
2014-07-03 10:37:59 -07:00
Richard Henderson d5e16ade14 alpha: Implement math_opt_barrier and math_force_eval 2014-07-03 08:56:55 -07:00
Richard Henderson ca7b945c73 alpha: Fix lround implementations
Use chopped rounding to add 0.5.
2014-07-03 08:52:45 -07:00
Richard Henderson cd1175a373 alpha: Remove round and roundf implementations
Two bugs in these implementations: First is that the add of 0.5
was not done in chopped rounding mode (easily fixable).  Second
is that the method generates incorrect inexact exceptions for
small integral values (not easily fixable).
2014-07-03 08:45:57 -07:00
Richard Henderson 8c682bb22c Rely on HP_TIMING_AVAIL implies HP_SMALL_TIMING_AVAIL 2014-07-03 08:38:41 -07:00
Richard Henderson 05502548e9 Always provide HP_SMALL_TIMING_AVAIL 2014-07-03 08:38:36 -07:00
Richard Henderson 4052993954 aarch64: Add hp-timing.h 2014-07-03 08:38:34 -07:00
Richard Henderson 86e1a7ff92 Unify hp-timing implementations
Provide an hp-timing-common.h for ports to use.
2014-07-03 08:38:30 -07:00
Richard Henderson 428dd03f5a Remove HP_TIMING_DIFF_INIT and dl_hp_timing_overhead
Without HP_TIMING_ACCUM, dl_hp_timing_overhead is write-only.
If we remove it, there's no point in HP_TIMING_DIFF_INIT either.
2014-07-03 08:38:25 -07:00
Richard Henderson c39323e9d2 Removing HP_TIMING_ACCUM as unused 2014-07-03 08:38:21 -07:00
Richard Henderson 850e0e032b Removing HP_TIMING_ZERO as unused 2014-07-03 08:38:18 -07:00
Richard Henderson 7db48f6aab powerpc: Remove dummy hp-timing.h
It's the same as the generic dummy version.
2014-07-03 08:38:15 -07:00
Siddhesh Poyarekar 99f8dc9220 Fix -Wundef warning on PAGE_COPY_THRESHOLD
The PAGE_COPY_THRESHOLD macro is meant to be overridden by
architecture-specific pagecopy.h, but it is currently done only by
mach; all other architectures use the default.  Check to see if the
macro is defined in addition to whether it is set to a non-zero value.
2014-07-03 01:49:43 +05:30
Vidya Ranganathan bc8ea38590 PowerPC: strcat optimization for PPC64/POWER7
This patch adds an ifunc power7 strcat symbol that uses the logic on
sysdeps/powerpc/strcat.c but call power7 strlen/strcpy symbols instead
of default ones.
2014-07-02 14:04:21 -05:00
Roland McGrath fe5f34e470 Add missing #include for MIN use in dl-sysdep.c. 2014-07-02 11:10:08 -07:00
Siddhesh Poyarekar 256aa66596 Fix typo in macro name
It is _POSIX_SIGNALS and not _POSUX_SIGNALS
2014-07-02 15:09:39 +05:30
Carlos O'Donell d34570a6b8 hppa: Remove GLIBC_2.3 from librt.abilist.
This commit removes the aio_cancel and aio_cancel64 symbols at
GLIBC_2.3 from the ABI baseline. The ABI baseline is now complete
for hppa and considered stable.
2014-07-02 03:18:26 -04:00
Carlos O'Donell ccf431ffe1 hppa: Add ABI baselines.
The following ABI baselines were tested against several old releases
of debian and gentoo. Several problems were discovered and fixed as
part of developing the ABI baselines.

Firstly, libBrokenLocale on gentoo exports __ctype_get_mb_cur_max
as @@GLIBC_2.0, but it should be @@GLIBC_2.2 since that's the minimum
version defined in shlib-versions for hppa. I don't know when this
broke, but master properly parses hppa's shlib-versions which clearly
lists libBrokenLocale as defaulting to GLIBC_2.2. Therefore I'm
accepting GLBIC_2.2 as the correct version for this symbol and setting
the baseline to that, despite the fact that the present distribution
is wrong. I don't expect that any new applications should be using
libBrokenLocale, so it should match the oldest behaviour which is to
export a GLIBC_2.2 symbol. For example in debian's 2.7 has it at
version GLIBC_2.2.

Secondly, aio_cancel and aio_cancel64 previously had a compat symbol
at version @GLIBC_2.1 with a new symbol at @@GLIBC_2.3[1]. During the
Linuxthreads to NPTL transition the file aio_cancel.c was lost for hppa
and that resulted in just @@GLIBC_2.1 versions of these symbols being
exported. The @@GLIBC_2.1 version works correctly and uses the right
value of ECANCELLED. Therefore if I were to fix this today it might
break correctly working applications using aio_cancel*@GLIBC_2.1 by
causing those to use the old aio_cancel that used the older value
of ECANCELLED. Thus the best option is to accept that the ABI changed
and ignore older applications in favour of newer applications. The
best thing to do is cleanup the version files (included in the patch).

The rest of the ABI was as expected (ignoring __p_type_syms size
change in 2008).
2014-07-01 23:59:47 -04:00
Roland McGrath ca06321df0 Add missing #include for MIN/MAX users. 2014-07-01 15:01:24 -07:00
Richard Henderson 631021e0aa alpha: Fix isnan
The isunordered formulation raises SIGFPE for SNaN.
2014-07-01 09:54:29 -07:00
Richard Henderson a1ac3184fa alpha: Update libm-test-ulps 2014-07-01 09:54:27 -07:00
Stefan Liebler 0c1d731ff9 S/390: Regenerate ULPs 2014-07-01 11:04:58 -03:00
Joseph Myers b0cb309635 MicroBlaze: Update kernel-features.h for syscalls added in 3.15
Now that the MicroBlaze 3.15 kernel has the pselect6, preadv and
pwritev syscalls, this patch updates kernel-features.h so they are
assumed to be present for 3.15 and later kernels.

2014-06-17  Joseph Myers  <joseph@codesourcery.com>

	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x030f00] (__ASSUME_PSELECT): Do not
	undefine.
	[__LINUX_KERNEL_VERSION >= 0x030f00] (__ASSUME_PREADV): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030f00] (__ASSUME_PWRITEV): Likewise.

Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
2014-07-01 14:57:59 +10:00
Roland McGrath 4d76cb3935 MicroBlaze: Consolidate nptl/ subdirectories under linux/...
Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
2014-07-01 14:57:58 +10:00
Roland McGrath 83d7d24b96 MicroBlaze: Consolidate NPTL/non versions of vfork 2014-07-01 14:57:57 +10:00
Roland McGrath 862e0f2721 MicroBlaze: Move NPTL public headers to sysdeps/microblaze/nptl/. 2014-07-01 14:57:56 +10:00
Roland McGrath 9bca952acb MicroBlaze: Define TLS_DEFINE_INIT_TP 2014-07-01 14:57:56 +10:00
Roland McGrath 8b4b5da7b6 MicroBlaze: Convert fork.c to arch-fork.h 2014-07-01 14:57:50 +10:00
David Holsgrove 0cdcad1769 MicroBlaze: Add missing sysdep-cancel.h implementation
And update socket.S, Makefile to use *_nocancel definitions.

Absence of sysdep-cancel.h was not apparent until Roland's
not-cancel.h unification.

2014-06-30  David Holsgrove  <david.holsgrove@xilinx.com>

  * sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h: New file
  * sysdeps/unix/sysv/linux/microblaze/socket.S: Update SINGLE_THREAD_P
  * sysdeps/unix/sysv/linux/microblaze/Makefile: Add to libpthread-routines

Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
2014-07-01 09:58:03 +10:00
Adhemerval Zanella 9b71d0e38c Update powerpc-fpu ULPs. 2014-06-30 17:38:43 -04:00
Joseph Myers ae05a9d77f Regenerate MIPS libm-test-ulps.
This patch regenerates libm-test-ulps for MIPS.

	* sysdeps/mips/mips32/libm-test-ulps: Regenerated.
	* sysdeps/mips/mips64/libm-test-ulps: Likewise.
2014-06-30 21:34:20 +00:00
Joseph Myers a7672a2f81 Regenerate powerpc-nofpu libm-test-ulps.
This patch regenerates libm-test-ulps for powerpc-nofpu.

	* sysdeps/powerpc/nofpu/libm-test-ulps: Regenerated.
2014-06-30 21:26:49 +00:00
Joseph Myers 665390c2e7 Regenerate ARM libm-test-ulps.
This patch regenerates libm-test-ulps for ARM.  As before it may be
useful for someone building for a configuration with VFMA enabled to
do a followup regeneration for any additional ulps in that
configuration.

Committed.

	* sysdeps/arm/libm-test-ulps: Regenerated.
2014-06-30 21:20:35 +00:00
Roland McGrath 46f1d8a6b5 ARM: Split Linuxism out of sysdeps/arm/nptl/tls.h 2014-06-30 11:19:22 -07:00
Joseph Myers ce9c5b3e95 Fix ldbl-128 expm1l spurious underflow (bug 16539).
This patch fixes spurious underflows from ldbl-128 expm1l, as reported
in <https://sourceware.org/ml/libc-alpha/2014-06/msg00835.html> and
exposed by the tests added for such a bug in the x86 / x86-64
version.  The bug and fix are essentially the same, so no separate bug
is filed in Bugzilla.

Tested for mips64.

	[BZ #16539]
	* sysdeps/ieee754/ldbl-128/s_expm1l.c: Include <float.h>.
	(__expm1l): Return argument unchanged when small but not
	subnormal.
2014-06-30 17:38:16 +00:00
Maciej W. Rozycki 2125f67454 sysdeps/unix/sysv/linux/bits/socket.h: Correct formatting
* sysdeps/unix/sysv/linux/bits/socket.h: Adjust macro formatting
	throughout.
2014-06-30 10:38:49 +01:00
Joseph Myers edea402804 Fix ldbl-128 powl sign of result in overflow / underflow cases (bug 17097).
This patch fixes bug 17097, ldbl-128 powl producing overflowing /
underflowing results with positive sign when the result should have
been negative.  This was shown up by the tests in non-default rounding
modes added by my patch for bug 16315, but isn't actually limited to
non-default rounding modes: rather, when rounding to nearest the
wrappers produced a result with the correct sign and so always hid the
bug unless -lieee was used to disable the wrappers.  The problem is
that in the cases where Y is large enough that the result overflows or
underflows for X not very close to 1, but not large enough to overflow
or underflow for all X != +/- 1 (in the latter case Y is always an
even integer), a positive overflowing / underflowing result is always
returned, rather than one with the correct sign.  This patch moves the
relevant part of computation of the sign earlier and returns a result
of the correct sign.

Tested for mips64.

	[BZ #17097]
	* sysdeps/ieee754/ldbl-128/e_powl.c (__ieee754_powl): Return
	result with correct sign in case of exponents that produce
	overflow except for X very close to 1.
2014-06-29 11:49:08 +00:00
Siddhesh Poyarekar 64df73c2ea Fix Wundef warning for MEMCPY_OK_FOR_FWD_MEMMOVE
Define MEMCPY_OK_FOR_FWD_MEMMOVE in memcopy.h and let arch-specific
implementations of that file override the value if necessary.  This
override is only useful for tile and moving this macro to memcopy.h
allows us to remove the tile-specific memmove.c.
2014-06-28 06:05:24 +05:30
Joseph Myers f1eafb41fa Remove shlib-versions ABI names support.
shlib-versions files can contain ABI lines that map triplets to a
canonical ABI name.  This name was once used for various purposes
where test baseline files for different ABIs went in a single
directory; now these purposes use sysdeps files, generation of headers
which have per-ABI variants uses abi-variants and related Makefile
variables and the shlib-versions ABI names are unused.  This patch
duly removes those lines and associated build system support for them.

Tested for x86_64 (both a full testsuite run and confirming the
installed shared libraries are unchanged by the patch).

	* Makeconfig ($(common-objpfx)soversions.mk): Do not generate
	abi-name definition.
	* scripts/soversions.awk: Do not handle or generate ABI lines.
	* shlib-versions: Remove ABI entries.
	* sysdeps/powerpc/nofpu/shlib-versions: Remove file.
	* sysdeps/x86_64/x32/shlib-versions: Remove ABI entry.
2014-06-27 20:24:23 +00:00
Roland McGrath 37caf178e2 MIPS: Consolidate nptl/ subdirectories under linux/... 2014-06-27 11:41:04 -07:00
Roland McGrath 58eb0862c3 MIPS: Consolidate NPTL/non versions of vfork 2014-06-27 11:18:10 -07:00
Joseph Myers cb403c34c6 Remove relro configure test.
This patch removes the configure test for working -z relro.

The use of -z relro in Makeconfig became unconditional with

commit 2e6ab1df44c412bb9d30b26a4d8a679150a7e375
Author: Ulrich Drepper <drepper@redhat.com>
Date:   Sat Oct 28 06:44:04 2006 +0000

    Remove conditional code which now is unnecessary.

(commit reference from git://repo.or.cz/glibc/history), so since then
the configure test has not controlled anything about how glibc is
built - simply about whether configure succeeds and allows a build to
be attempted.  The test for whether the option did something useful
(as opposed to whether it exists - which we can certainly just assume
by now) was originally added in
<https://sourceware.org/ml/libc-hacker/2004-09/msg00069.html> to
disable the option in a case when it did nothing useful on ia64 (as a
result of something deliberate in the linker on ia64).  Since 2006
that disabling has been of no effect, and given that the current test
does not set libc_relro_required for ia64, it does nothing whatever
useful for the original motivating case.  Also at around the same time
in 2006 the test was made to give an error for missing or broken -z
relro support on various architectures.

So effectively all the test does now is verify that, on certain
architectures, the linker has not been changed deliberately to make
the option ineffective.  I see no apparent reason why such a change
should be expected, or why the build should be stopped if it were to
be made (any more than we disallow build on ia64); I think we can
trust binutils patch review to point out the consequences of any
change to COMMONPAGESIZE setting.  The only thing that might now make
sense would be disabling the -z relro use on an architecture-specific
basis if there were an architecture-specific reason to consider that
to make sense; it would be for the ia64 maintainer to decide if that
makes sense for ia64 at present, but I think that could be done
through sysdeps Makefiles - no special configure tests needed.

Tested for x86_64 that this patch makes no change to the installed
shared libraries.

Together with
<https://sourceware.org/ml/libc-alpha/2014-06/msg00788.html> (pending
review) this substantially eliminates architecture-specific cases from
architecture-independent configure.ac files.  There remains an i386
case in sysdeps/mach/hurd/configure.ac that should properly move to
the i386 subdirectory.  (There are also OS-specific cases outside
OS-specific directories; in principle I think should should also
move.)

	* configure.ac (libc_commonpagesize): Remove variable.
	(libc_relro_required): Likewise.
	(libc_cv_z_relro): Remove configure test.
	* configure: Regenerated.
	* sysdeps/aarch64/preconfigure (libc_commonpagesize): Do not set
	variable.
	(libc_relro_required): Likewise.
	* sysdeps/alpha/preconfigure (libc_commonpagesize): Likewise.
	(libc_relro_required): Likewise.
	* sysdeps/arm/preconfigure.ac (libc_commonpagesize): Likewise.
	(libc_relro_required): Likewise.
	* sysdeps/arm/preconfigure: Regenerated.
	* sysdeps/ia64/preconfigure: Remove file.
	* sysdeps/tile/preconfigure (libc_commonpagesize): Do not set
	variable.
	(libc_relro_required): Likewise.
2014-06-27 16:51:22 +00:00
Joseph Myers be25493251 Fix yn overflow handling in non-default rounding modes (bug 16561, bug 16562).
This patch fixes bugs 16561 and 16562, bad results of yn in overflow
cases in non-default rounding modes, both because an intermediate
overflow in the recurrence does not get detected if the result is not
an infinity and because an overflowing result may occur in the wrong
sign.  The fix is to set FE_TONEAREST mode internally for the parts of
the function where such overflows can occur (which includes the call
to y1 - where yn is used to compute a Bessel function of order -1,
negating the result of y1 isn't correct for overflowing results in
directed rounding modes) and then compute an overflowing value in the
original rounding mode if the to-nearest result was an infinity.

Tested x86_64 and x86 and ulps updated accordingly.  Also tested for
mips64 and powerpc32 to test the ldbl-128 and ldbl-128ibm changes.

(The tests for these bugs were added in my previous y1 patch, so the
only thing this patch has to do with the testsuite is enable yn
testing in all rounding modes.)

	[BZ #16561]
	[BZ #16562]
	* sysdeps/ieee754/dbl-64/e_jn.c: Include <float.h>.
	(__ieee754_yn): Set FE_TONEAREST mode internally and then
	recompute overflowing results in original rounding mode.
	* sysdeps/ieee754/flt-32/e_jnf.c: Include <float.h>.
	(__ieee754_ynf): Set FE_TONEAREST mode internally and then
	recompute overflowing results in original rounding mode.
	* sysdeps/ieee754/ldbl-128/e_jnl.c: Include <float.h>.
	(__ieee754_ynl): Set FE_TONEAREST mode internally and then
	recompute overflowing results in original rounding mode.
	* sysdeps/ieee754/ldbl-128ibm/e_jnl.c: Include <float.h>.
	(__ieee754_ynl): Set FE_TONEAREST mode internally and then
	recompute overflowing results in original rounding mode.
	* sysdeps/ieee754/ldbl-96/e_jnl.c: Include <float.h>.
	(__ieee754_ynl): Set FE_TONEAREST mode internally and then
	recompute overflowing results in original rounding mode.
	* sysdeps/i386/fpu/fenv_private.h [!__SSE2_MATH__]
	(libc_feholdsetround_ctx): New macro.
	* math/libm-test.inc (yn_test): Use ALL_RM_TEST.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps : Likewise.
2014-06-27 14:52:13 +00:00
Joseph Myers b351d85aa2 Fix MIPS64 *_nocancel gp setup.
The 64-bit MIPS ABIs involve the caller setting up t9 ($25) to the
address of the called function, and the called function then using
this in a .cpsetup directive to compute gp.  The .cpsetup directive
needs to name the function to which t9 points for this purpose.  In
the definition of *_nocancel functions, the directive pointed to the
normal entry point rather than the _nocancel one, resulting in
segfaults when the _nocancel functions were used.  This patch corrects
the function name used in the directive.  (It seems the bug was latent
until Roland's not-cancel.h unification, with the _nocancel entry
points not previously being used - so not user-visible in a release,
so no Bugzilla entry required.)

Tested mips64 sufficiently to confirm the previously seen segfaults
are fixed.

	* sysdeps/unix/sysv/linux/mips/mips64/nptl/sysdep-cancel.h
	[__PIC__] (PSEUDO): Use name of _nocancel entry point in
	corresponding .cpsetup call.
2014-06-26 23:55:46 +00:00
Roland McGrath 3cb4de4741 ARM: Move more aeabi routine magic out of Linux-specific directories 2014-06-26 15:08:29 -07:00
Roland McGrath a3dd035d9d Add missing #include <fpu_control.h> to ARM fesetenv/feupdateenv. 2014-06-26 13:35:31 -07:00
Joseph Myers a8779c28a8 Remove configure tests for assembler CFI support.
This patch removes configure tests for assembler CFI support (and
thereby eliminates an architecture-specific case in the main
configure.ac), instead assuming that support is present
unconditionally.

The main test was added in 2003 around the time CFI support was added
to the assembler.  cfi_personality and cfi_lsda support were added to
the assembler in 2006.  cfi_sections support was added in 2009, a few
weeks before binutils 2.20 was released; it's in 2.20, the minimum
supported version, so even that configure test is obsolete.

Tested x86_64 that the installed shared libraries are unchanged by
this patch.

	* configure.ac (libc_cv_asm_cfi_directives): Remove configure
	test.
	* configure: Regenerated.
	* config.h.in (HAVE_ASM_CFI_DIRECTIVES): Remove macro undefine.
	* sysdeps/arm/configure.ac (libc_cv_asm_cfi_directive_sections):
	Remove configure test.
	* sysdeps/arm/configure: Regenerated.
	* sysdeps/nptl/configure.ac: Do not check
	libc_cv_asm_cfi_directives.
	* sysdeps/nptl/configure: Regenerated.
	* sysdeps/x86_64/nptl/configure.ac: Remove file.
	* sysdeps/x86_64/nptl/configure: Remove generated file.
	* b/sysdeps/generic/sysdep.h [HAVE_ASM_CFI_DIRECTIVES]: Make code
	unconditional.
	[!HAVE_ASM_CFI_DIRECTIVES]: Remove conditional code.
2014-06-26 17:33:32 +00:00
Siddhesh Poyarekar 4cf5b6d0d7 Fix Wundef warning for ELF_MACHINE_NO_RELA
This patch defines ELF_MACHINE_NO_RELA on all architectures.  Tested
only on x86_64 to verify that the sources before and after are
identical except for two instructions that pass the current line
number in dl-machine.h to assert_fail.
2014-06-26 22:30:40 +05:30
Roland McGrath d8a483f3ef S390: Consolidate nptl/ subdirectories under linux/... 2014-06-26 09:34:34 -07:00
Roland McGrath 52ae23b4bf Move remaining S390 code out of nptl/. 2014-06-26 09:31:11 -07:00
Roland McGrath 39507e4a6c S390: Consolidate NPTL/non versions of vfork 2014-06-26 09:30:52 -07:00
Roland McGrath e549ee5658 S390: Consolidate NPTL/non versions of clone 2014-06-26 09:30:33 -07:00
Roland McGrath 6ad2df0bda AArch64: Consolidate nptl/ subdirectories under linux/... 2014-06-26 09:29:24 -07:00
Roland McGrath 7c1c1d8ec3 MIPS: Consolidate NPTL/non versions of clone 2014-06-25 14:50:58 -07:00
Joseph Myers 74385da564 Remove __ASSUME_O_CLOEXEC / O_CLOEXEC conditionals in sysdeps/unix/sysv/linux/.
This patch removes conditionals on __ASSUME_O_CLOEXEC, and on
O_CLOEXEC being defined, in sysdeps/unix/sysv/linux/, now that
O_CLOEXEC support can be unconditionally assumed.

The patch is conservative in what it changes and further followup
cleanups may be possible.  It may be possible to remove dl-opendir.c,
but the patch does not do so, just removing a redundant undefine and
redefine of __ASSUME_O_CLOEXEC.  Also, __ASSUME_O_CLOEXEC is defined
unconditionally for Hurd as well as Linux.  Thus, if we decide that
O_CLOEXEC support is a required feature of any glibc port, we could
remove __ASSUME_O_CLOEXEC and all conditionals on it throughout glibc,
rather than just cleaning up sysdeps/unix/sysv/linux/.

Tested x86_64 that the disassembly of installed shared libraries is
unchanged by this patch.

	* sysdeps/unix/sysv/linux/dl-opendir.c (__ASSUME_O_CLOEXEC): Do
	not undefine and redefine.
	* sysdeps/unix/sysv/linux/getsysstats.c (__get_nprocs)
	[O_CLOEXEC]: Make code unconditional.
	(__get_nprocs) [!O_CLOEXEC]: Remove conditional code.
	* sysdeps/unix/sysv/linux/shm_open.c: Do not include
	<kernel-features.h>.
	[O_CLOEXEC && !__ASSUME_O_CLOEXEC] (have_o_cloexec): Remove
	conditional variable definition.
	(shm_open) [O_CLOEXEC]: Make code unconditional.
	(shm_open) [!O_CLOEXEC || !__ASSUME_O_CLOEXEC]: Remove conditional
	code.
2014-06-25 20:29:45 +00:00
Joseph Myers c2570a0b35 Move USE_REGPARMS define to sysdeps/i386/configure.ac.
This patch moves the USE_REGPARMS define from the toplevel
configure.ac to sysdeps/i386/configure.ac.

Tested x86 that the disassembly of installed shared libraries is
unchanged by this patch.

	* configure.ac (USE_REGPARMS): Don't define here.
	* configure: Regenerated.
	* sysdeps/i386/configure.ac (USE_REGPARMS): Define here.
	* sysdeps/i386/configure: Regenerated.
2014-06-25 20:26:14 +00:00
Joseph Myers 11b076bbae Remove stray includes of kernel-features.h.
Now that files using __ASSUME_* macros have been made by
<https://sourceware.org/ml/libc-alpha/2014-06/msg00543.html> to
include <kernel-features.h> directly, any include from a file not
using __ASSUME_* macros can safely be removed (as there will no longer
be some other file relying on indirect inclusion via a header from
which the include is being removed).

This patch removes such unnecessary kernel-features.h includes.

Tested x86_64 that disassembly of installed shared libraries is
unchanged by this patch, except for line numbers in calls to
__assert_fail from libc.so and ld.so.

2014-06-23  Joseph Myers  <joseph@codesourcery.com>

	* nptl/createthread.c: Don't include kernel-features.h.
	* nptl/pthread_cancel.c: Likewise.
	* nptl/pthread_condattr_setclock.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/pt-raise.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/pthread_getcpuclockid.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/pthread_kill.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/pthread_sigqueue.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/raise.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/s390/s390-32/pt-vfork.S: Likewise.
	* nptl/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S: Likewise.
	* nptl/sysdeps/unix/sysv/linux/s390/s390-64/pt-vfork.S: Likewise.
	* nptl/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_create.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_delete.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_getoverr.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_gettime.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_routines.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_settime.c: Likewise.
	* nscd/gai.c: Likewise.
	* nss/nss_db/db-open.c: Likewise.
	* sysdeps/generic/ldsodefs.h: Likewise.
	* sysdeps/sh/nptl/tls.h: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sigcontextinfo.h: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/adjtime.c: Likewise.
	* sysdeps/unix/sysv/linux/alpha/xstatconv.h: Likewise.
	* sysdeps/unix/sysv/linux/arm/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/sigcontextinfo.h: Likewise.
	* sysdeps/unix/sysv/linux/check_pf.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_getcpuclockid.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_getres.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_gettime.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_nanosleep.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_settime.c: Likewise.
	* sysdeps/unix/sysv/linux/dl-execstack.c: Likewise.
	* sysdeps/unix/sysv/linux/dl-osinfo.h: Likewise.
	* sysdeps/unix/sysv/linux/dl-sysdep.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/futimesat.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/poll.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/fcntl.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/preadv.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/preadv64.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pwritev.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pwritev64.c: Likewise.
	* sysdeps/unix/sysv/linux/getcwd.c: Likewise.
	* sysdeps/unix/sysv/linux/getpagesize.c: Likewise.
	* sysdeps/unix/sysv/linux/getsysstats.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/fxstat.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/lxstat.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/mmap.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/mmap64.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/xstat.c: Likewise.
	* sysdeps/unix/sysv/linux/ia64/system.c: Likewise.
	* sysdeps/unix/sysv/linux/if_index.c: Likewise.
	* sysdeps/unix/sysv/linux/ifaddrs.c: Likewise.
	* sysdeps/unix/sysv/linux/ifreq.c: Likewise.
	* sysdeps/unix/sysv/linux/ldsodefs.h: Likewise.
	* sysdeps/unix/sysv/linux/lutimes.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/nptl/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/accept4.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/recvmmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/sendmmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/mmap64.c: Likewise.
	* sysdeps/unix/sysv/linux/netlinkaccess.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/chown.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_mask.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_nomask.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_mask.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_nomask.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/prof-freq.c: Likewise.
	* sysdeps/unix/sysv/linux/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/mmap.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/system.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/sigpending.c: Likewise.
	* sysdeps/unix/sysv/linux/sigprocmask.c: Likewise.
	* sysdeps/unix/sysv/linux/sigsuspend.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/xstatconv.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/system.c: Likewise.
	* sysdeps/unix/sysv/linux/syslog.c: Likewise.
	* sysdeps/unix/sysv/linux/system.c: Likewise.
	* sysdeps/unix/sysv/linux/testrtsig.h: Likewise.
	* sysdeps/unix/sysv/linux/timespec_get.c: Likewise.
	* sysdeps/unix/sysv/linux/ttyname.c: Likewise.
	* sysdeps/unix/sysv/linux/ttyname_r.c: Likewise.
	* sysdeps/unix/sysv/linux/utimensat.c: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/xstatconv.h: Likewise.
2014-06-25 18:09:01 +00:00
Joseph Myers 3e239be647 Move base_machine and machine settings from configure.ac to sysdeps preconfigure fragments.
This patch makes non-ex-ports architectures set base_machine and
machine based on the original configured machine value in preconfigure
fragments, like ex-ports architectures, rather than in the toplevel
configure.ac.

Tested x86 that the disassembly of installed shared libraries is
unchanged by the patch.

	* configure.ac (base_machine): Do not set specially for particular
	machines here.
	* configure: Regenerated.
	* sysdeps/powerpc/preconfigure: Move machine and base_machine
	settings from configure.ac.
	* sysdeps/i386/preconfigure: New file.
	* sysdeps/s390/preconfigure: Likewise.
	* sysdeps/sh/preconfigure: Likewise.
	* sysdeps/sparc/preconfigure: Likewise.
2014-06-25 17:52:56 +00:00
Roland McGrath 74836003ed SPARC: Consolidate unnecessary nptl/ subdirectories. 2014-06-25 10:04:14 -07:00
Roland McGrath 06d50baa34 SPARC: Consolidate nptl/ subdirectories under linux/... 2014-06-25 10:03:52 -07:00
Joseph Myers a4ccbc9b24 Remove __ASSUME_XFS_RESTRICTED_CHOWN.
This patch removes the __ASSUME_XFS_RESTRICTED_CHOWN macro, now it can
be presumed to be defined unconditionally.  I'm not sure if what's
left of __statfs_chown_restricted is actually useful (if not, a
followup could remove it), but I left it there to keep the patch
conservative and avoid changing the code generated for glibc.

Tested x86_64 that the disassembly of installed shared libraries is
unchanged by the patch.

	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_XFS_RESTRICTED_CHOWN): Remove macro.
	* sysdeps/unix/sysv/linux/pathconf.c (__statfs_chown_restricted)
	[__ASSUME_XFS_RESTRICTED_CHOWN]: Make code unconditional.
	(__statfs_chown_restricted) [!__ASSUME_XFS_RESTRICTED_CHOWN]:
	Remove conditional code.
2014-06-25 16:39:33 +00:00
Will Newton 9aea0cb842 ARM: Add support for AT_HWCAP2 in _dl_procinfo
Add support for the new HWCAP2 values for ARMv8 added in the
3.15 kernel. Tested using QEMU which supports these extensions.

ChangeLog:

2014-06-25  Will Newton  <will.newton@linaro.org>

	* sysdeps/unix/sysv/linux/arm/dl-procinfo.c
	(_dl_arm_cap_flags): Add HWCAP2 values.
	* sysdeps/unix/sysv/linux/arm/dl-procinfo.h
	(_DL_HWCAP_COUNT): Increase to 37.
	(_DL_HWCAP_LAST): New define.
	(_DL_HWCAP2_LAST): New define.
	(_dl_procinfo): Add support for printing
	AT_HWCAP2 entries.
	(_dl_string_hwcap): Use _dl_hwcap_string.
2014-06-25 16:02:04 +01:00
Adhemerval Zanella 6eaa65cefb Update powerpc-fpu ULPs. 2014-06-25 09:57:39 -05:00
Joseph Myers cecf2ed43a Remove __ASSUME_UTIMENSAT.
This patch removes the __ASSUME_UTIMENSAT macro, now it can be
unconditionally assumed to be true.

This shows that the only live uses of __ASSUME_UTIMES are in utimes.c
and they are only live for hppa.  I intend a followup patch to make
__ASSUME_UTIMES into an hppa-specific macro (not used or defined
outside sysdeps/unix/sysv/linux/hppa/).

Tested x86_64 that the disassembly of installed shared libraries is
unchanged by this patch.

	* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_UTIMENSAT):
	Remove macro.
	* sysdeps/unix/sysv/linux/futimes.c: Do not include
	<kernel-features.h>.
	[__NR_utimensat && !__ASSUME_UTIMENSAT] (miss_utimensat): Remove
	conditional variable definition.
	(__futimes): Update comment.
	(__futimes) [__ASSUME_UTIMENSAT]: Make code unconditional.
	(__futimes) [!__ASSUME_UTIMENSAT]: Remove conditional code.
2014-06-25 11:36:10 +00:00
Joseph Myers a638de828d Fix exp10 spurious underflows (bug 16560).
This patch fixes spurious underflows from exp10 for arguments near 0
(part of bug 16560; that bug also includes spurious underflows from
exp2, which are not fixed by this patch).  The problem is underflows
in the internal computation converting the exp10 argument to arguments
for exp (with extra precision), and the fix is simply to return 1
early for arguments near enough to 0 (just as arguments with large
enough magnitude have their own overflow / underflow logic at the
start of the function).

Tested x86_64 and x86 and ulps updated accordingly; also tested for
powerpc32 and mips64 to validate the ldbl-128ibm and ldbl-128 changes.

	[BZ #16560]
	* sysdeps/ieee754/dbl-64/e_exp10.c (__ieee754_exp10): Return 1 for
	arguments close to 0.
	* sysdeps/ieee754/ldbl-128/e_exp10l.c (__ieee754_exp10l):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_exp10l.c (__ieee754_exp10l):
	Likewise.
	* math/auto-libm-test-in: Add more tests of exp10.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/x86_64/fpu/libm-test-ulps: Update.
2014-06-25 11:33:22 +00:00
Joseph Myers 0f5b71850e Remove __ASSUME_COMPLETE_READV_WRITEV.
This patch removes the __ASSUME_COMPLETE_READV_WRITEV
kernel-features.h macro, now that it can be unconditionally assumed to
be true.  (The relevant kernel feature was added some time between 2.0
and 2.2, and this macro is only used in sysdeps/unix/sysv/linux/.)

Tested x86_64 that the disassembly of installed shared libraries is
unchanged by this patch.

	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_COMPLETE_READV_WRITEV): Remove macro.
	* sysdeps/unix/sysv/linux/readv.c: Do not include
	<kernel-features.h>.
	[!__ASSUME_COMPLETE_READV_WRITEV]: Remove conditional code.
	[!UIO_FASTIOV] (UIO_FASTIOV): Remove macro.
	(__libc_readv) [__ASSUME_COMPLETE_READV_WRITEV]: Make code
	unconditional.
	(__libc_readv) [!__ASSUME_COMPLETE_READV_WRITEV]: Remove
	conditional code.
	* sysdeps/unix/sysv/linux/writev.c: Do not include
	<kernel-features.h>.
	[!__ASSUME_COMPLETE_READV_WRITEV]: Remove conditional code.
	[!UIO_FASTIOV] (UIO_FASTIOV): Remove macro.
	(__libc_writev) [__ASSUME_COMPLETE_READV_WRITEV]: Make code
	unconditional.
	(__libc_writev) [!__ASSUME_COMPLETE_READV_WRITEV]: Remove
	conditional code.
2014-06-25 11:31:51 +00:00
Will Newton c7aec4beb1 sysdeps/posix/tempname.c: Merge from gnulib
Partial merge from gnulib which fixes a number of -Wundef warnings.
The parts that differ from gnulib are the header comment, use of
__glibc_unlikely, a #define of __secure_getenv and the use of tabs.
The majority of the patch is cosmetic comment changes, the only runtime
change is an abort if an unknown kind is passed to __gen_tempname.

ChangeLog:

2014-06-25  Will Newton  <will.newton@linaro.org>

	* sysdeps/posix/tempname.c: Merge from gnulib, cosmetic
	comment changes throughout the file.  Remove checks
	for HAVE_*_H definitions that are not required.
	(__gen_tempname): Call abort if an unknown kind value is
	passed.
2014-06-25 10:52:51 +01:00
Andreas Schwab c5241f9575 m68k: Add compat symbols for scalbln* 2014-06-25 09:38:09 +02:00
Siddhesh Poyarekar 911422da02 Add compat symbols for scalb* in i386
Bring back symbols into libc.so for scalb* functions.  They are no
longer used but unfortunately they're now part of the ABI.
2014-06-25 08:47:13 +05:30
Roland McGrath 0d749bbeba x86: Consolidate unnecessary nptl/ subdirectories. 2014-06-24 19:17:43 -07:00
Joseph Myers 4060283dec Fix x86/x86_64 expm1l spurious underflow exceptions (bug 16539).
This patch fixes bug 16539, spurious underflow exceptions from x86 /
x86-64 expm1l.  The problem is that the computation of a base-2
exponent with extra precision involves spurious underflows for
arguments that are small but not subnormal, so a check is added to
just return the argument in those cases.  (If the argument *is*
subnormal, underflowing is correct and the existing code will always
underflow, so it suffices to keep using the existing code in that
case; some expm1 implementations have a bug (bug 16353) with missing
underflow exceptions, but I don't think there's such a bug in this
particular version.)

Tested x86_64 and x86; no ulps updates needed.

(auto-libm-test-out diffs omitted below.)

	[BZ #16539]
	* sysdeps/i386/fpu/e_expl.S (IEEE754_EXPL) [USE_AS_EXPM1L]: Just
	return the argument for normal arguments with exponent below -64.
	* sysdeps/x86_64/fpu/e_expl.S (IEEE754_EXPL) [USE_AS_EXPM1L]:
	Likewise.
	* math/auto-libm-test-in: Add another test of expm1.
	* math/auto-libm-test-out: Regenerated.
2014-06-24 21:00:08 +00:00
Joseph Myers e7dd3c8c1d Fix ldbl-128 erfl spurious underflows (bug 16287).
This patch fixes bug 16287, spurious underflows from ldbl-128 erfl
arising from it calling erfcl for arguments with absolute value at
least 1.0, although for large positive arguments erfcl correctly
underflows but erfl shouldn't.  The fix is simply to avoid calling
erfcl, and just return 1, for arguments above a cut-off large enough
that erfl correctly rounds to-nearest as 1 but not so large that erfcl
underflows.

Tested mips64.  Also tested x86_64 and x86 to confirm the new tests
(taken from the tests of erfc) don't cause any problems there; no ulps
updates needed.

	[BZ #16287]
	* sysdeps/ieee754/ldbl-128/s_erfl.c (__erfl): Return 1 without
	calling __erfcl for arguments at least 16.
	* math/auto-libm-test-in: Add more tests of erf.
	* math/auto-libm-test-out: Regenerated.
2014-06-24 20:56:56 +00:00
Joseph Myers 0ea5d373c7 Move architecture cases out of sysdeps/unix/sysv/linux/configure.ac.
Continuing the process of making non-ex-ports architectures follow the
preferred sysdeps practices followed by ex-ports architectures - that
is, putting things in architecture-specific sysdeps files rather than
having architecture-specific cases in architecture-independent files -
this patch moves architecture cases out of
sysdeps/unix/sysv/linux/configure.ac into (new or existing) configure
fragments for each architecture.  (In the case of the
arch_minimum_kernel setting for x32,
sysdeps/unix/sysv/linux/x86_64/x32/configure already has such a
setting so the setting in sysdeps/unix/sysv/linux/configure.ac was a
duplicate that could just be removed - though I haven't tested for
x32.)

Tested for x86_64 and x86 that the patch causes no changes to the
installed shared libraries or ldd (or any part of the installation
except for the parts that always change because the files contain
timestamps - nscd and static libraries).

	* sysdeps/unix/sysv/linux/configure.ac: Remove cases for
	individual architectures.
	* sysdeps/unix/sysv/linux/configure: Regenerated.
	* sysdeps/unix/sysv/linux/i386/configure.ac: New file.
	* sysdeps/unix/sysv/linux/i386/configure: New generated file.
	* sysdeps/unix/sysv/linux/powerpc/configure.ac
	(ldd_rewrite_script): Define variable.
	* sysdeps/unix/sysv/linux/powerpc/configure: Regenerated.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/configure.ac: New
	file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/configure: New
	generated file.
	* sysdeps/unix/sysv/linux/s390/configure.ac: New file.
	* sysdeps/unix/sysv/linux/s390/configure: New generated file.
	* sysdeps/unix/sysv/linux/sh/configure.ac: New file.
	* sysdeps/unix/sysv/linux/sh/configure: New generated file.
	* sysdeps/unix/sysv/linux/sparc/configure.ac: New file.
	* sysdeps/unix/sysv/linux/sparc/configure: New generated file.
	* sysdeps/unix/sysv/linux/x86_64/configure.ac: New file.
	* sysdeps/unix/sysv/linux/x86_64/configure: New generated file.
2014-06-24 20:53:03 +00:00
Siddhesh Poyarekar 2307e1261e Fix namespace violation in pthreadtypes.h (BZ #17084)
This was causing conformtest failures on i386.
2014-06-24 22:43:34 +05:30
Wilco b8c005732e Optimize fesetenv
Improve fesetenv to use an optimized implementation similar to
feupdateenv.

2014-06-24  Wilco  <wdijkstr@arm.com>

	* sysdeps/arm/fesetenv.c (fesetenv): Optimize implementation.
2014-06-24 15:05:23 +00:00
Wilco b5570d92d6 Add _FPU_MASK_RM and use it instead of FE_TOWARDZERO.
2014-06-24  Wilco  <wdijkstr@arm.com>

	* sysdeps/arm/fpu_control.h (_FPU_MASK_RM): Define.
	* sysdeps/arm/fenv_private.h (libc_fesetround_vfp)
	(libc_feholdexcept_setround_vfp) (libc_feholdsetround_vfp)
	(libc_feresetround_vfp) (libc_feholdsetround_vfp_ctx)
	(libc_feresetround_vfp_ctx): Use _FPU_MASK_RM.
	* sysdeps/arm/fesetround.c (fesetround): Use _FPU_MASK_RM.
	* sysdeps/arm/get-rounding-mode.h (get_rounding_mode):
	Use _FPU_MASK_RM.
2014-06-24 15:02:51 +00:00
Wilco 947bdca24d Remove an unused include.
2014-06-24  Wilco  <wdijkstr@arm.com>

	* sysdeps/arm/fsetexcptflg.c (fesetexceptflag): Remove unused include.
2014-06-24 15:00:01 +00:00
Wilco 00f669edb8 Cleanup fenv implementation
Remove some spaces before libm_hidden_def.

2014-06-24  Wilco  <wdijkstr@arm.com>

	* sysdeps/arm/feholdexcpt.c (feholdexcept): Remove space.
	* sysdeps/arm/fesetenv.c (fesetenv): Remove space.
	* sysdeps/arm/fesetround.c (fesetround): Remove space.
	* sysdeps/arm/fraiseexcpt.c (feraiseexcept): Remove space.
2014-06-24 14:57:32 +00:00
Wilco db59bad394 Rewrite feupdateenv
This patch rewrites feupdateenv to improve performance by avoiding
unnecessary FPSCR reads/writes. It fixes bug 16918 by passing the
correct return value.

2014-06-24  Wilco  <wdijkstr@arm.com>

	[BZ #16918]
	* sysdeps/arm/feupdateenv.c (feupdateenv):
	Rewrite to reduce FPSCR accesses and fix return value.
2014-06-24 13:53:04 +00:00
Wilco 001f7b773c Speed up the ARM fenv implementation by avoiding unnecessary FPSCR
writes if the FPSCR remains unchanged.

2014-06-24  Wilco  <wdijkstr@arm.com>

	* sysdeps/arm/fclrexcpt.c (feclearexcept):
	Optimize to avoid unnecessary FPSCR writes.
	* sysdeps/arm/fedisblxcpt.c (fedisableexcept): Likewise.
	* sysdeps/arm/feenablxcpt.c (feenableexcept): Likewise.
	* sysdeps/arm/fsetexcptflg.c (fesetexceptflag): Likewise.
	* sysdeps/arm/setfpucw.c (__setfpucw): Likewise.
2014-06-24 12:04:27 +00:00
Wilco 4841e6a6c2 Use libc calls defined by fenv_private.h to implement several fenv functions
rather than duplicating functionality. To make this work for softfp builds,
ensure functions in fenv_private are not conditionally compiled.

2014-06-24  Wilco  <wdijkstr@arm.com>

	* sysdeps/arm/fegetround.c (fegetround): Call get_rounding_mode.
	* sysdeps/arm/feholdexcpt.c (feholdexcept): Call libc_feholdexcept_vfp.
	* sysdeps/arm/fesetround.c (fesetround): Call libc_fesetround_vfp.
	* sysdeps/arm/fgetexcptflg.c (fegetexceptflag):
	Call libc_fetestexcept_vfp.
	* sysdeps/arm/ftestexcept.c (fetestexcept): Call libc_fetestexcept_vfp.
	* sysdeps/arm/fenv_private.h: Move libc_*_vfp functions outside of
	__SOFTFP__ ifdef so that they can be built for softfp.
2014-06-24 11:13:08 +00:00
Siddhesh Poyarekar 08e5862f5f Fix build warning in pthread_rwlock_*
The first argument of elision_adapt and that of ELISION_*LOCK have
different signs since __elision_rwcount is signed char * and the
argument of elision_adapt is uint8_t *.  Modified elision_adapt to
accept signed char * instead of uint8_t *.
2014-06-24 16:12:43 +05:30
Roland McGrath aba8ef95b5 Add missing #include in get-rounding-mode.h 2014-06-23 14:07:59 -07:00
Roland McGrath 3fc7236a28 Remove an unused variable in fstatvfs. 2014-06-23 14:05:14 -07:00
Joseph Myers 4648909d56 Fix cosh spurious underflows from expm1 (bug 16354), inaccurate results near 0 (bug 17061).
This patch fixes bug 16354, spurious underflows from cosh when a tiny
argument is passed to expm1 and expm1 correctly underflows although
the final result of cosh should be 1.  As noted in that bug, some
cases are latent because of expm1 implementations not raising
underflow (bug 16353), but all the implementations are fixed
similarly.  They already contained checks for tiny arguments, but the
checks were too late to avoid underflow from expm1 (although they
would avoid underflow from subsequent squaring of the result of
expm1); they are moved before the expm1 calls.

The thresholds used for considering arguments tiny are not
particularly consistent in how they relate to the precision of the
floating-point format in question.  They are, however, all sufficient
to ensure that the round-to-nearest result of cosh is indeed 1 below
the threshold (although sometimes they are smaller than necessary).
But the previous logic did not return 1, but the previously computed 1
+ expm1(abs(x)) value.  And the thresholds in the ldbl-128 and
ldbl-128ibm code (0x1p-71L - I suspect 0x3f8b was intended in the code
instead of 0x3fb8 - and (roughly) 0x1p-55L) are not sufficient for
that value to be 1.  So by moving the test for tiny arguments, and
consequently returning 1 directly now the expm1 value hasn't been
computed by that point, this patch also fixes bug 17061, the (large
number of ulps) inaccuracy for small arguments in those
implementations.  Tests for that bug are duly added.

Tested x86_64 and x86 and ulps updated accordingly.  Also tested for
mips64 and powerpc32 to validate the ldbl-128 and ldbl-128ibm changes.

	[BZ #16354]
	[BZ #17061]
	* sysdeps/ieee754/dbl-64/e_cosh.c (__ieee754_cosh): Check for
	small arguments before calling __expm1.
	* sysdeps/ieee754/flt-32/e_coshf.c (__ieee754_coshf): Check for
	small arguments before calling __expm1f.
	* sysdeps/ieee754/ldbl-128/e_coshl.c (__ieee754_coshl): Check for
	small arguments before calling __expm1l.
	* sysdeps/ieee754/ldbl-128ibm/e_coshl.c (__ieee754_coshl):
	Likewise.
	* sysdeps/ieee754/ldbl-96/e_coshl.c (__ieee754_coshl): Likewise.
	* math/auto-libm-test-in: Add more cosh tests.  Do not allow
	spurious underflow for some cosh tests.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
2014-06-23 20:20:10 +00:00
Joseph Myers 46a3d3c7d6 Set errno for y1 overflow (bug 17050).
This patch fixes bug 17050, missing errno setting for y1 overflow (for
small positive arguments).  An appropriate check is added for overflow
directly in the __ieee754_y1 implementation, similar to the check
present for yn (doing it there rather than in the wrapper also avoids
yn needing to repeat the check when called for order 1 or -1 and it
uses __ieee754_y1).

Tested x86_64 and x86; no ulps update needed.  Also tested for mips64
to verify the ldbl-128 fix (the ldbl-128ibm code just #includes the
ldbl-128 file).

	[BZ #17050]
	* sysdeps/ieee754/dbl-64/e_j1.c: Include <errno.h>.
	(__ieee754_y1): Set errno if return value overflows.
	* sysdeps/ieee754/flt-32/e_j1f.c: Include <errno.h>.
	(__ieee754_y1f): Set errno if return value overflows.
	* sysdeps/ieee754/ldbl-128/e_j1l.c: Include <errno.h>.
	(__ieee754_y1l): Set errno if return value overflows.
	* sysdeps/ieee754/ldbl-96/e_j1l.c: Include <errno.h>.
	(__ieee754_y1l): Set errno if return value overflows.
	* math/auto-libm-test-in: Add more tests of y0, y1 and yn.
	* math/auto-libm-test-out: Regenerated.
2014-06-23 20:17:13 +00:00
Joseph Myers 863893ec95 Test cpow in all rounding modes.
This patch enables testing of cpow in all rounding modes using
ALL_RM_TEST.  There were two reasons this was previously deferred:

* MPC has complicated rounding-mode-dependent rules for the signs of
  exact zero real or imaginary parts in the result of mpc_pow.  Annex
  G does not impose any such requirements and I don't think glibc
  should try to implement any particular logic here.  This patch adds
  support for gen-auto-libm-tests passing the IGNORE_ZERO_INF_SIGN
  flag to libm-test.inc.

* Error accumulations in some tests in non-default rounding modes
  exceed the maximum error permitted in libm-test.inc.  This patch
  marks the problem tests with xfail-rounding.  (It might be possible
  to reduce the accumulations a bit by using round-to-nearest when
  cpow calls clog, but I don't think there's much point; the
  implementation approach for cpow is fundamentally deficient, as
  discussed in the existing bug for cpow inaccuracy which can
  reasonably be considered to cover these less-inaccurate cases as
  well.  It's possible that the test "cpow 2 0 10 0" will also need
  xfail-rounding on some platforms.)

Tested x86_64 and x86 and ulps updated accordingly.

	* math/gen-auto-libm-tests.c: Document use of
	ignore-zero-inf-sign.
	(input_flag_type): Add value flag_ignore_zero_inf_sign.
	(input_flags): Add ignore-zero-inf-sign.
	(output_for_one_input_case): Handle flag_ignore_zero_inf_sign.
	* math/gen-libm-test.pl (generate_testfile): Handle
	ignore-zero-inf-sign.
	* math/auto-libm-test-in: Mark some cpow tests with
	ignore-zero-inf-sign and some with xfail-rounding.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (cpow_test): Use ALL_RM_TEST.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-06-23 20:15:14 +00:00
Joseph Myers 4da6db5188 Fix pow overflow in non-default rounding modes (bug 16315).
This patch fixes bug 16315, bad pow handling of overflow/underflow in
non-default rounding modes.  Tests of pow are duly converted to
ALL_RM_TEST to run all tests in all rounding modes.

There are two main issues here.  First, various implementations
compute a negative result by negating a positive result, but this
yields inappropriate overflow / underflow values for directed
rounding, so either overflow / underflow results need recomputing in
the correct sign, or the relevant overflowing / underflowing operation
needs to be made to have a result of the correct sign.  Second, the
dbl-64 implementation sets FE_TONEAREST internally; in the overflow /
underflow case, the result needs recomputing in the original rounding
mode.

Tested x86_64 and x86 and ulps updated accordingly.

	[BZ #16315]
	* sysdeps/i386/fpu/e_pow.S (__ieee754_pow): Ensure possibly
	overflowing or underflowing operations take place with sign of
	result.
	* sysdeps/i386/fpu/e_powf.S (__ieee754_powf): Likewise.
	* sysdeps/i386/fpu/e_powl.S (__ieee754_powl): Likewise.
	* sysdeps/ieee754/dbl-64/e_pow.c: Include <math.h>.
	(__ieee754_pow): Recompute overflowing and underflowing results in
	original rounding mode.
	* sysdeps/x86/fpu/powl_helper.c: Include <stdbool.h>.
	(__powl_helper): Allow negative argument X and scale negated value
	as needed.  Avoid passing value outside [-1, 1] to f2xm1.
	* sysdeps/x86_64/fpu/e_powl.S (__ieee754_powl): Ensure possibly
	overflowing or underflowing operations take place with sign of
	result.
	* sysdeps/x86_64/fpu/multiarch/e_pow.c [HAVE_FMA4_SUPPORT]:
	Include <math.h>.
	* math/auto-libm-test-in: Add more tests of pow.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (pow_test): Use ALL_RM_TEST.
	(pow_tonearest_test_data): Remove.
	(pow_test_tonearest): Likewise.
	(pow_towardzero_test_data): Likewise.
	(pow_test_towardzero): Likewise.
	(pow_downward_test_data): Likewise.
	(pow_test_downward): Likewise.
	(pow_upward_test_data): Likewise.
	(pow_test_upward): Likewise.
	(main): Don't call removed functions.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-06-23 20:12:33 +00:00
Roland McGrath 5686b236cc powerpc: Consolidate nptl/ subdirectories under linux/.... 2014-06-23 09:40:01 -07:00
Wilco Dijkstra e6d90d675d Add generic HAVE_RM_CTX implementation
This patch adds a generic implementation of HAVE_RM_CTX using standard
fenv calls. As a result math functions using SET_RESTORE_ROUND* macros
do not suffer from a large slowdown on targets which do not implement
optimized libc_fe*_ctx inline functions. Most of the libc_fe* inline
functions are now unused and could be removed in the future (there are
a few math functions left which use a mixture of standard fenv calls
and libc_fe* inline functions - they could be updated to use
SET_RESTORE_ROUND or improved to avoid expensive fenv manipulations
across just a few FP instructions).

libc_feholdsetround*_noex_ctx is added to enable better optimization of
SET_RESTORE_ROUND_NOEX* implementations.

Performance measurements on ARM and x86 of sin() show significant gains
over the current default, fairly close to a highly optimized fenv_private:

                        ARM   x86
no fenv_private      : 100%  100%
generic HAVE_RM_CTX  : 250%  350%
fenv_private (CTX)   : 250%  450%

2014-06-23  Will Newton  <will.newton@linaro.org>
	    Wilco  <wdijkstr@arm.com>

	* sysdeps/generic/math_private.h: Add generic HAVE_RM_CTX
	implementation.  Include get-rounding-mode.h.
	[!HAVE_RM_CTX]: Define HAVE_RM_CTX to zero.
	[!libc_feholdsetround_noex_ctx]: Define
	libc_feholdsetround_noex_ctx.
	[!libc_feholdsetround_noexf_ctx]: Define
	libc_feholdsetround_noexf_ctx.
	[!libc_feholdsetround_noexl_ctx]: Define
	libc_feholdsetround_noexl_ctx.
	(libc_feholdsetround_ctx): New function.
	(libc_feresetround_ctx): New function.
	(libc_feholdsetround_noex_ctx): New function.
	(libc_feresetround_noex_ctx): New function.
2014-06-23 17:29:00 +01:00
Roland McGrath 88a4647493 MIPS: Move NPTL public headers to sysdeps/mips/nptl/. 2014-06-23 09:25:41 -07:00
Roland McGrath 15bed4728f m68k: Consolidate nptl/ subdirectories under linux/... 2014-06-23 09:24:18 -07:00
Roland McGrath d42df55520 SH: Consolidate nptl/ subdirectories under linux/..... 2014-06-23 09:23:12 -07:00
Joseph Myers 76e5216e31 Update headers for Linux 3.15.
This patch updates glibc headers for changes / new definitions in
Linux 3.15.  In the course of my review I noticed that
IPV6_PMTUDISC_INTERFACE was absent from glibc despite the inclusion of
IP_PMTUDISC_INTERFACE; I added it along with IP_PMTUDISC_OMIT and
IPV6_PMTUDISC_OMIT.  I did not add FALLOC_FL_NO_HIDE_STALE given the
kernel header comment that it is reserved.

Tested x86_64.

	* sysdeps/unix/sysv/linux/bits/fcntl-linux.h [__USE_GNU]
	(FALLOC_FL_COLLAPSE_RANGE): New macro.
	[__USE_GNU] (FALLOC_FL_ZERO_RANGE): Likewise.
	* sysdeps/unix/sysv/linux/bits/in.h (IP_PMTUDISC_OMIT): Likewise.
	(IPV6_PMTUDISC_INTERFACE): Likewise.
	(IPV6_PMTUDISC_OMIT): Likewise.
2014-06-23 15:48:42 +00:00
Adhemerval Zanella db22400947 PowerPC: sync hwcap.h capabilities
Linux commit dd58a092c4202f2bd490adab7285b3ff77f8e467 added the
PPC_FEATURE2_VEC_CRYPTO auvx capability to indicate whether to
hardware supports vector crypto hardware instructions.  This patch
adds its definition to powerpc hwcap bits.
2014-06-23 09:40:05 -05:00